Available to hire
Hello, I’m Marilina Kontogiannatou, a dynamic professional blending AI training, data annotation, and linguistic analysis with a strong background in international administration and financial services. I optimize Large Language Models through prompt engineering, quality evaluation, and meticulous linguistic review to ensure native-level accuracy in Greek content, transcription, and translation.
I thrive in freelance and remote environments, collaborating on Greek-language AI projects and data workflows. With a proactive approach and clear communication, I bridge the gap between technical and business teams to deliver reliable, high-quality results.
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Beginner
Beginner
Beginner
Beginner
Language
Greek, Modern
Fluent
English
Advanced
German
Beginner
Work Experience
Administration Clerk / Front Desk at ACS Courier and Postal Services
October 1, 2020 - November 1, 2023Managed front-of-house operations, customer service, and general administrative workflows to ensure smooth daily operations and accurate documentation.
Invoice to Pay Analyst at Pfizer Inc.
February 1, 2019 - April 1, 2020Processed high-volume invoices and regulated payment runs and financial reports in a global corporate environment; coordinated cost allocation and provided internal customer service.
Secretary at Exterior Garden Designs
February 1, 2014 - January 1, 2017Oversaw invoicing, client bookings, and management of local marketing strategies.
Service & Development Assistant (Internship) at ATEbank of Greece
October 1, 2011 - April 1, 2012Assisted with opening savings accounts, filing, and retail customer service; specialized in audio annotation and transcription for high-volume YouTube podcasts.
Greek Language Specialist at Perle
January 1, 2026 - PresentProviding high-level linguistic support for Grok and X. Executing complex transcription, translation, and proofreading tasks to ensure native-level accuracy.
Data Annotator (Greek Language) at Arohana Tech
November 1, 2025 - January 1, 2026AI data labeling for Greek language; performed annotation tasks and quality checks.
AI Chatbot Tasker & Coordinator at Remotasks & Outlier
November 1, 2023 - July 1, 2024Contributed to the development of Gemini, Google, and other LLM projects in Greek; applied prompt engineering to train, rate, and rewrite machine-learning responses for improved accuracy.
Education
Bachelor’s Degree in Management & Economics (Electronic Marketing) at Technological Educational Institute of Crete, Greece
January 11, 2030 - February 4, 2026Secondary Degree in Financial Services at School of Economics and Administration, Kefalonia, Greece
January 11, 2030 - February 4, 2026Bachelor’s Degree in Management & Economics (Electronic Marketing) at Technological Educational Institute of Crete, Greece
January 11, 2030 - March 19, 2026Secondary Degree in Financial Services at School of Economics and Administration, Kefalonia, Greece
January 11, 2030 - March 19, 2026Bachelor's Degree in Management & Economics (Electronic Marketing) at Technological Educational Institute of Crete, Greece
January 11, 2030 - March 19, 2026Secondary Degree in Financial Services at School of Economics and Administration, Kefalonia, Greece
January 11, 2030 - March 19, 2026Bachelor’s Degree in Management & Economics (Electronic Marketing) at Technological Educational Institute of Crete, Greece
January 11, 2030 - March 19, 2026Secondary Degree in Financial Services at School of Economics and Administration, Kefalonia, Greece
January 11, 2030 - March 19, 2026Qualifications
ECDL Certified (Microsoft Office)
January 11, 2010 - February 4, 2010Grow with Google: Increase Creativity with the use of AI
January 1, 2025 - February 4, 2026Grow with Google: Introduction to Cloud
January 1, 2025 - February 4, 2026Increase Creativity with the use of AI – Grow with Google
January 1, 2025 - March 19, 2026Introduction to Cloud – Grow with Google
January 1, 2025 - March 19, 2026ECDL Certification
January 11, 2010 - March 19, 2010Increase Creativity with the use of AI – Grow with Google
January 1, 2025 - March 19, 2026Introduction to Cloud – Grow with Google
January 1, 2025 - March 19, 2026ECDL Certified (Microsoft Office)
January 11, 2030 - March 19, 2026Increase Creativity with the Use of AI – Grow with Google
January 1, 2025 - March 19, 2026Introduction to Cloud – Grow with Google
January 1, 2025 - March 19, 2026Industry Experience
Financial Services, Professional Services, Education, Media & Entertainment, Software & Internet
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Beginner
Beginner
Beginner
Beginner
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